package Thread.Demo15;

/**
 * @Author Miku
 * @Create 2021/5/23 16:18
 * 测试：生产者消费者模型-->利用缓冲区解决：管程法
 */
public class TestPC {
    public static void main(String[] args) {
        SynContainer container = new SynContainer();

        new Producer(container).start();
        new Consumer(container).start();
    }
}

/**
 * 生产者
 */
class Producer extends Thread{
    SynContainer container;
    public Producer(SynContainer container) {
        this.container = container;
    }

    //生产
    @Override
    public void run() {
        for (int i = 0; i < 100; i++) {
            container.push(new Chicken(i));
            System.out.println("生产了"+i+"只鸡");
        }
    }
}

/**
 * 消费者
 */
class Consumer extends Thread{
    SynContainer container;
    public Consumer(SynContainer container) {
        this.container = container;
    }

    //消费
    @Override
    public void run() {
        for (int i = 0; i < 100; i++) {
            System.out.println("消费了-->"+container.pop().id+"只鸡");
        }
    }
}

/**
 * 产品
 */
class Chicken{
    int id;

    public Chicken(int id) {
        this.id = id;
    }
}

/**
 * 缓冲区
 */
class SynContainer{
    /**
     * 需要一个容器大小
     */
    Chicken[] chickens = new Chicken[10];

    /**
     * 容器计数器
     */
    int count = 0;

    //生产者放入产品
    public synchronized void push(Chicken chicken) {
        //如果容器满了，就需要等待消费者消费
        if (count == chickens.length) {
            //通知消费者消费，生产者等待
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

        //如果没有满，就需要丢入产品
        chickens[count] = chicken;
        count++;
        this.notifyAll();


    }

    //消费者消费产品
    public synchronized Chicken pop() {
        //判断能否消费
        if (count == 0) {
            //等待生产者生产，消费者等待
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

        //如果可以消费
        count--;
        Chicken chicken = chickens[count];

        //吃完了，通知生产者生产
        this.notifyAll();
        return chicken;
    }

}
